This is a small case of secondary development of phase I Revit (automatic layout of supports and hangers)

Report to you , I watched the world cup some time ago, so I don't want to update

Let's give you a small case , To apologize , I can't help it if I'm not happy ！

Okay , This is a serious dividing line ！

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Data;
using Autodesk.Revit;
using Autodesk.Revit.UI;
using Autodesk.Revit.UI.Selection;
using Autodesk.Revit.DB;
using Autodesk.Revit.DB.Architecture;
using Autodesk.Revit.DB.Mechanical;
using Autodesk.Revit.DB.Plumbing;
using Autodesk.Revit.DB.Electrical;
using Autodesk.Revit.ApplicationServices;
using System.Data.SqlClient;
using Autodesk.Revit.Creation;
using Autodesk.Revit.DB.Structure;// I didn't remember to copy before 
namespace zpx123
{
    [Autodesk.Revit.Attributes.Transaction(Autodesk.Revit.Attributes.TransactionMode.Manual)]
    [Autodesk.Revit.Attributes.Regeneration(Autodesk.Revit.Attributes.RegenerationOption.Manual)]
    [Autodesk.Revit.Attributes.Journaling(Autodesk.Revit.Attributes.JournalingMode.NoCommandData)]
    public class Class1 : IExternalCommand
    {
        public Autodesk.Revit.UI.Result Execute(ExternalCommandData commandData, ref string message, Autodesk.Revit.DB.ElementSet elements)
        {
            // Create application objects 
            Autodesk.Revit.ApplicationServices.Application app = commandData.Application.Application;
            // Create document object 
            Autodesk.Revit.DB.Document doc = commandData.Application.ActiveUIDocument.Document;
            // Create application objects 
            Autodesk.Revit.UI.UIApplication uiapp = commandData.Application;
            // Create document object 
            Autodesk.Revit.UI.UIDocument uiDoc = uiapp.ActiveUIDocument;
            // Start business 
            Transaction ts = new Transaction(doc, " Support and hanger arrangement ");
            ts.Start();

Above, this is the template , I don't know if you remember

Here's the serious code ！

In previous issues, I talked about many articles about creating examples , Let's apply it this time , Is it troublesome to make supports and hangers manually at ordinary times ？ Now let's make a small program to let him automatically cloth the supports and hangers ！

1. Select the distance to arrange the supports and hangers

2. Select the pipe for which the supports and hangers are to be arranged

Let's add a form first , Rough design the form , That's about it ！

Add code to the form ：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace zpx123
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public void textBox1_TextChanged(object sender, EventArgs e)
        {
            string str = textBox1.Text;
        }
        private void button1_Click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.OK;
        }
        public string Number
        {
            get { return textBox1.Text; }// Get the value returned in the text box 
        }
        private void Form1_Load(object sender, EventArgs e)
        {
        }
    }
}

Serious code ：

           double number = 0;
            int number1 = 0;
            zpx123.Form1 form = new zpx123.Form1();
            form.ShowDialog();
            if (form.DialogResult == DialogResult.OK)
            {
                string str = form.Number;
              // In order to prevent users from making mistakes , I'm used to kicking 
             try
                {
                    number1 = Convert.ToInt32(str);
                    number = number1/304.8;
                }
                catch
                {
                    MessageBox.Show(" Please enter the correct number ");
                }
            }
// Through the above, you can get the value entered by the user 
            ElementId id = null;
            FilteredElementCollector faa = new FilteredElementCollector(doc);
            faa.OfClass(typeof(FamilyInstance));// Collect family types 
            foreach (FamilyInstance fa in faa)
            {
                if (fa.GetParameters(" Families and types ")[0].AsValueString().Contains(" Supports and hangers "))
                {
                    id = fa.Symbol.Id;
                }
            }
            FamilySymbol fas = doc.GetElement(id) as FamilySymbol;
            Selection ree = uiDoc.Selection;
            Reference re = ree.PickObject(ObjectType.Element);
            Element elem = doc.GetElement(re);
            Pipe pipe = elem as Pipe;
            LocationCurve curve = pipe.Location as LocationCurve;
            XYZ start = curve.Curve.GetEndPoint(0);// Get the starting point of the pipe 
            XYZ end = curve.Curve.GetEndPoint(1);// Get the end point of the pipe 
            double a = start.X ;
            double b = start.Y ;
            double zz = start.Z ;
            double c = end.X ;
            double d = end.Y ;
            // The above is to obtain the starting point and end point of the pipeline xyz Value 
            double xy = start.DistanceTo(end) ;// Ask for distance 
            int gs = (int)((xy / number));// Please put several supports and hangers 
           double y = (number * (d - b)) / Math.Sqrt((c - a) * (c - a) + (d - b) * (d - b)) ;
           double x = (number * (c - a)) / Math.Sqrt((c - a) * (c - a) + (d - b) * (d - b)) ;
           // The above is the mathematical formula 
            List<FamilyInstanceCreationData> listt = new List<FamilyInstanceCreationData>();
            // A collection used to store a series of pipe coordinates 
            for (double j = 0; j < gs; j ++)
            {
               double A = a + x;
                double B = b + y;
                listt.Add(new FamilyInstanceCreationData(new XYZ(A, B, zz), fas, StructuralType.NonStructural));// Put the coordinates in the set 
                a = A;
                b = B;
            }
            doc.Create.NewFamilyInstances2(listt);// Create supports and hangers 
            ts.Commit();
            return Result.Succeeded;
        }
    }
}

（ The code is a little long , I tried , Screenshots can't cut all the code in , It can only be divided into a few pictures ）

Effect display ：

Click finish , Select pipe .

Because the supports and hangers are in one direction , Therefore, in order to achieve the perfect realization, we also need to rotate the supports and hangers , I'll leave this to your clever babies ！ How to rotate will be updated in a later issue ！ Coming soon （ I'm not sure when to update ）....